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The load on the heart for each person will be different and it depends on many factors, for example, a large load is tested by athletes during intense training. The heart of man — this is a kind of pump, the principle of which prescribes that the heart muscle can adjust the load, which should be feasible and comfortable.

The natural control or self-regulation of stress on the heart by using heart rate. If a person, for example, is at rest, the heart rate ranges from 60 to 90 beats per minute. Within a minute through the heart muscle takes about

four liters of blood. This indicator is called the cardiac output.

Good exercise strengthens the heart muscle

When an additional load on the heart increases as the frequency of its contractions, and the amount of blood pumped by the heart. Typically, such a heart less wear because the load train. Heart healthy person is able to adapt, even in conditions of severe stress, but like any muscle, it takes time to relax. It should Continue reading →

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